Features
Front-office
Ecotax subtotal in order summary
Ecotax subtotal in order history
Ecotax subtotal in order confirmation email
Back-office
Ecotax price attribute in product edit page
Ecotax subtotal in order summary
Ecotax subtotal in line items summary
Once the order is registered, the DEEE is fixed, unless you edit the order (same behavior as standard OroCommerce taxes).